body {
  position: relative;
}
.aa {
  position: absolute;
  z-index: 20;
  margin: 10px;
}
.aa .icon-xiangzuo1 {
  color: #ffffff;
  font-size: 24px;
}
.videoBox {
  background: #000;
  width: 100%;
  height: 371px;
  margin-bottom: 25px;
  position: relative;
}
.videoBox .video {
  width: 100%;
  height: 371px;
}
.videoBox .jump {
  position: absolute;
  top: 30px;
  height: 100px;
  width: 100%;
  background-color: aqua;
  z-index: 22;
}
.videoBox .videoView {
  width: 100%;
  height: 230px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 33;
}
.videoBox .videoView .iconfont {
  color: #ffffff;
  font-size: 40px;
  margin-bottom: 19px;
}
.videoBox .videoView p {
  color: #ffffff;
  font-size: 14px;
}
.courseTitle {
  height: 100px;
  margin: 0 25px;
  border-bottom: 1px solid #bbbbbb;
  margin-bottom: 20px;
}
.courseTitle .TitleTop {
  color: #101010;
  font-size: 24px;
  margin-top: 25px;
  margin-bottom: 10px;
}
.courseTitle .TitleBot .TitleBotL {
  width: 140px;
}
.courseTitle .TitleBot .kil {
  margin-right: 10px;
}
.courseTitle .TitleBot .comNum {
  color: #101010;
  font-size: 20px;
}
.courseTitle .TitleBot .comTex {
  color: #8a8a8a;
  font-size: 14px;
}
.courseTitle .TitleBotR .comR {
  color: #8a8a8a;
  font-size: 14px;
}
.courseTitle .TitleBotR .icon-xiangyou1 {
  margin-left: 5px;
  color: #8a8a8a;
  font-size: 14px;
}
.courseInfo {
  height: 170px;
  margin: 0 25px;
}
.courseInfo .userImg {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-right: 15px;
}
.courseInfo .userInfo .userName {
  color: #101010;
  font-size: 18px;
  margin-bottom: 10px;
}
.courseInfo .userInfo .userMess {
  color: #8a8a8a;
  font-size: 14px;
}
.courseInfo .mesBox {
  position: relative;
  margin-top: 20px;
  margin-bottom: 10px;
}
.courseInfo .mesBox .mes {
  color: #8a8a8a;
  font-size: 16px;
  width: 100%;
  /*限制元素宽度*/
  overflow: hidden;
  /*文本超出隐藏*/
  display: -webkit-box;
  /*盒子模型微弹性伸缩模型*/
  -webkit-box-orient: vertical;
  /*伸缩盒子的子元素垂直排列*/
  -webkit-line-clamp: 2;
  /*文本显示3行*/
  word-break: break-all;
}
.courseInfo .mesBox .more {
  position: absolute;
  font-size: 14px;
  color: black;
  bottom: 0px;
  right: 0;
}
.introduction {
  height: 70px;
  margin: 0 25px;
  margin-bottom: 36px;
}
.introduction .introL .introLTop {
  margin-bottom: 10px;
}
.introduction .comI {
  color: black;
  font-size: 25px;
  margin-right: 5px;
}
.introduction .comT {
  color: black;
  font-size: 16px;
}
.introduction .comP {
  color: #8a8a8a;
  font-size: 14px;
  margin-left: 20PX;
}
.introduction .introR {
  border-left: 1px dotted #bbbbbb;
  padding-left: 30px;
}
.introduction .introR .introRTop {
  margin-bottom: 10px;
}
.btn {
  margin: 0 32px;
  height: 55px;
  line-height: 55px;
  text-align: center;
  border-radius: 27px;
  background-color: #4294ff;
  color: #ffffff;
  font-size: 18px;
}
